Same email for two accounts?

Well I have 3 accounts on my ps3. My main account and two sub accounts that I rarely use. I just deleted one of the two accounts from my Ps3 for a reason in which I don't even know why I decided to do that. But now I am trying to get back that account.

But the only problem is that I used the same email for my main account and that account. Is there anything I can do to get this account back?